Logitech quickcam messenger v-um14

I have downloaded the right software from logitech cuz i dont have the disk anymore and it still says that my webcam is unplugged when it isnt and when i click the usb part on my computer it says unknown device please help!!!

My v-um14 needs software and i can not find a program that works with it at ... i lose my cd to download my logitech cam pls provide me to dawnload v-um14My v-um14 needs software and i can not find a program that works with it at ... i lose my cd to download my logitech cam pls provide me to dawnload v-um14

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